Space heater



F. M. YOUNG SPACE HEATER April 8, 1930.

Filed April 29, 1929 2 Sheets-Sheet 1 April 8, 1930.

F. M. YOUNG SPACE HEATER N T Q Filed April 29, 1929 2 sheets sheet 2 .3 j/ N, 6 g g 12 1' f 10 8 Z4 2] p vd J IIMH Patented A r. 8, 1930 UNITED STATES FRED M. YOUNG, F RAGIN E, WISCONSIN SPACE HEATER Application filed April 29, 1929. Serial No. 358,872.

This invention relates to improved space heaters.

The main objects of my invention are to provide a compact unitary space heater, comprising a heat interchanger and means for driving a current of air therethrough, of improved construction for facilitating convenient removal and cleaning of the heat transferring core; to provide header. tanks for a space heater of the class described for form- I ing the top and bottom sides of a partial enclosure for the air driving means; to provide an improved mounting on plates at the sides of the space heater for pivotally supporting adjustable air deflectors; to provide an improved structure of stream-line design for suspending a fan or blower from one of the header tanks and for avoiding the resistance to the passage of a current through the heat interchanger heretofore caused by a. vacuum pocket on the leeward side of structures of circular and rectangular cross sections, to provide yieldable connections between the headentanks of a heat interchanger and the heat transferring core thereof for avoiding fatiguing of the material of the core by the thermal expansion and contraction and failure thereof when the device is exposed to freezing temperatures.

In the accompanying drawings I have shown a specific embodiment of my invention, in which:

Figure-1 is a fragmentary front elevation of a radiator embodying my invention.

Fig. 2 is a side elevation.

Fig. 3 is a vertical section on the line 3-3 of Fig. 1. v

Fig. 4 is a horizontal section taken on the line 44 of Fig. 2. 40 Fig. 5 is a fragmentary horizontal section taken on the line 5-5 of Fig. 3.

Fig. 6 is a fragmentary horizontal section taken on the line 6-6 of Fig. 2.

In general my improved heater consists of a heat interchanger of a thin wall type having rapid heat transferring powers. The interchanger comprises upper and lower header tanks and an intercommunicative heat transferring core. The core comprises 60 a nest of tubes and yieldable top and bottom header plates which are preferably brazed to the tubes. These yieldable plates extend outwardly beyond the perimeters of the top and bottom ends respectively of the core, forming flangesupon which the header tanks are seated. A steam packing gasket is located between each header tank and the yieldable flange upon which it is supported for forming a seal and metal strips are provided adjacent the inner side of the flanges. 'The header tanks are secured on the ends of the core by bolts which extend through registering apertures in the flange and gasket and into the threaded apertures in bosses on the header tanks.

The tanks are substantially as wide as the thickness of the heat transferringcore and they are provided with flanges which extend beyond the rear sides thereof forming top and bottom sides of a partial enclosure for a fan propeller. Side plates cover the side edges of the core and extend beyond the rear side thereof providing the sides for the partial enclosure. The fan and its motor are suspended from the top header tank'by a supporting bracket having a stream-line design for avoiding resistance to the passage of air through the core by the propeller. The upper tank is also provided with threadedbosses for receiving the' ends of supporting rods by means of which the -entire device may be suspended from a wall or ceiling. The heater' may also be conveniently supported from a ceiling or other overhead structure by attaching supporting members not shown in the ac- 85 companying drawings to apertured plates secured to the top header tank. The side plates which have channel-shaped front edge portions are secured at their ends to the top and bottom header tanks respec- 9 tively. These side plates enclose the sides of the heat transferring core and form sides for the partial enclosure in which the fan pro-r peller is confined. Adjustable air deflectors extending across the front of the heat trans- 95 ferring core are pivotally mounted on the channel shaped edge portions of the side plates which are reinforced by interior rigid channel-shaped bars. When sidewise deflection of the heated air is desired, vertical de- 100 provided with an integral face plate 12 flectors may be pivotally mounted at their In the form shown, upper and lower header tanks 1 and 2' respectively are communicatively connected by a tubular heat transferring core 3. The top and bottom ends of the core are provided with yieldable header plates 4 and 5 respectively which extend outwardly beyond the sides and ends of the core forming seats or flanges for receiving the header tanks 1 and 2. Gaskets 6 and 7 are located between the top header plate 4 and the upper header tank 1 and between the bottom header late 5 and the lower hea'der tank 2 respective y. The header tanks are firmly clamped on the header plates 4 and 5 by bars 8 extending longitudinally of the core, transverse bai's 9, and bolts 10 extending through registering apertures in the bars, header plates and gaskets and threaded in apertures in bosses 11 of the header tanks. In this manner the parts of the heat inter-changer are removably secured together. The core section 3 may be conveniently removed, cleaned and reassembled.

Theyieldable connectionbetween the heat transferrin core prevents fatiguing of the materials t ereof by thermal expansion or contraction. When the contents of the tanks and core freeze the header plates bulge somewhat and take up the pressure due to the expansion of the contents, thereby avoiding cracking of the tanks.

The upper and lower header tanks 1 and 2 are provided with rearwardly extending flanges 1' and 2' comprising downwardly and upwardly curved edge portions 3 and 4' respectively.

The flange 1' of the upper header tank is su stantially in a vertical plane. A fan supportin arm 13 is provided at its upper end with a ange 14 which is attached to the flange 12 of the header tank by bolts 15 threaded in a ertures in the flange 12. The conduction o heat from the u per header tank to the arm 13 is prevente by an insulating gasket 12' positioned between face plate 12 and the arm. The vertically depending portion of the supporting arm 13 is of the shape illustrated in Fig. 4, the edge portion thereof adjacent the heat transferrlng core, tapering substantially to a point and the opposite edge portion being substantially semi-cylindrical. A flange 16 is provided on the bottom extremity of the arm 13 for forming a base for the driving means 17 of a fan. A fan propeller 18 is mounted on the shaft of the driving means and is positioned substantially adjacent the rear side of the radiator core 3.

The driving means 17 preferably comprises an electric motor, but a small fluid turbine mag be successfully used if desired.

y supporting the fan from the upper header tank, vibration of the heat transferring core by the operation of the fan is min-' imized because the entire weight of the fan is supported directly by the u per header tank which is in turn supporte directly by the rods.

The fan 18 is partially enclosed within a compartment, the ends of which are formed by overhangin flanges 1 and 2 on the upper and lower tan s1 and 2 respectively. The sides of the partial enclosure for the fan are formed by rearwar'dly extending portions of side plates 21 and 22 secured at their upper and lower ends to the tanks 1 and 2 respectively'by screws 23. The rear edge portion of the side plates are provided with flanges 24 and 24 which overlap the curved edges 3 and 4 of the flanges 1' and 2 respectively and which are secured thereto by screws 5.

The front edge portions of the side plates are provided with rectangular channel shaped edge portions 25 which extend in ad- Vance of the front side of the heat transferring ing bar 26 extends longitudinally through the channel shaped edge portion 25. Air deflectors 27 are pivotally mounted on bolts 28 extendin through apertures in the channel shaped e ge portion 25 and in the reinforcing bar 26. These deflectors may be adjustably positioned at any desired angle for. directing the current of air impelled through the core by the propeller 18.

The upper header tank 1 is provided with four external bosses 29 having threaded apertures therein in which supporting rods 30 are mounted. Rods 30 may be attached to a ceiling or other over-head structure for suspending the entire device in the space of a room to be heated or the heater may be conveniently suspended by attaching supporting means, not shown in the drawings, to the apertured plates 30 which are inserted between the ends of the upper header tanks and the side plates and secured to the upper header tanks by screws 23. Both formsof support may be used in some instances to comply with safety regulations.

The current of air impelled by the fan 23 is forced in a leftward direction as viewed in Fig. 2., Any supporting structure extending in the path of this current of air tends'to set up a resistance impeding its progress. In the present construction, the supporting arm 13 is of stream-line design having its leeward side tapered. This construction fills in that space at which a vacuum is normally created when supporting structure of cylindrical or rectangular cross-section is employed and reduces the resistance to the passage of an air current through the heat transferring unit, thereby maintaining the desired airflow which would otherwise be reduced by this obstruction.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim: 1

1. A device of the class described comprising upper and lower header tanks and a heat transferring core, portions of said tanks being extended rearwardly of said core in overhanging relation, side plates on said core having channel-shaped front edge portions, reinforcements extending lon itudinally of said edge portions, air defl ectors adjustably mounted on said reinforced edge portions, and means for passing a current of air through said core comprising a fan propeller partially enclosed by the overhanging tank portions and said side plates.

2. A unit space heater of the class described comprising upper and lower header tanks and a heat transferring core, header plates on said radiator core extending outwardly beyond the sides thereof forming seats for said header tanks, gaskets between said seats and said header tanks, means for removably securing the latter to said core comprising bolts extended through apertures in said header plates and gaskets and thread ed in apertures in said header tank, a support removably mounted on said upper header tank comprising an outwardly extending arm of streamline design, a fan on said support. and a partial closure for said fan comprising overhanging portions on said tanks and said side plates.

3. A heater of the class described comprising a heat transferring unit, upper and lower header tanks yieldably secured on the upper and lower ends respectively of said unit, overhead supporting means on said upper header tank for supporting said heater from overhead structure, a fan supporting arm having a vertical flange at its upper end rigidly secured to said upper header tank and a lower horizontal flange, the intermediate portions of said arm being of streamline design for avoiding resistance to the passage of air through said heat transferring unit, a heat insulating gasket between said vertical flange and said upper header, and a fan mounted on said horizontal flange.

4. A heater of the class described comprising a heat transferring unit, upper and lower header tanks yieldably secured on the upper and lower ends respectively of said unit, overhead supporting means on said up header tank for supporting said heater rom overhead structure, a fan supporting arm having a vertical flange at one end rigidly secured to one of said header tanks, and a horizontal flange on the other end of said arm, the intermediate portions of said arm being of streamline design for avoiding resistance to the pas- FRED M. YOUNG. 

